SP Quick Spool Valve... greatly improves turbo spoolup? Worth the read...

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Wanted to share for those interested and get some feedback on what you guys think about it. Its a relatively new product on the market from Sound Performance and good dyno run comparisons are just starting to come about.
If I hadn't already built my exhaust I would definitely be considering this, and I might anyway in the future... I mean what would you pay if someone said they could improve your turbo's response by over 1000 rpm without any sacrifice of top end?

Originally Posted by SP website

We are pleased to bring you a revolutionary product for aftermarket turbo kits! We have created a product that had a 25% increase in rear wheel horsepower, while reducing unwanted turbo lag! It\'s like nitrous but you\'ll never have to fill a bottle again.

The Quick Spool Valve has a butterfly valve blocking a scroll of the divided turbo housing making the turbo act as if it were a smaller turbo.The switching solenoid can be wired up to open at a set point and when the valve opens up you have the full potential of your turbo with no sacrifice of peak power

Our Quick Spool Valve is available in T3, T4, and even T6 sizes.

*** Notes:
You will need the following in order for this valve to work
- Undivided exhaust manifold
- Divided exhaust housing on your turbo

*** You will need either a switching valve only if using a standalone to control the valve.
Otherwise you can use a hobbs switch with the switching valve if not using a standalone.

The Quick Spool Valve thickness is 3/4\" so this is going to require either modification to the exhaust manifold or the downpipe to compensate for the height increase of 3/4\". The valve sits between your turbo exhaust housing and the exhaust manifold.

Originally Posted by Reid@SP

It's finally here!!

Sound Performance Quick Spool Valve Results!!

After much patience from the community, I have finally had the opportunity to document and produce these results for all to see and deduce. Evan Oliver, the car owner, gave me permission to use his car to showcase the results from his car.

Mods:

SP Single turbo kit
GT4294 Journal bearing .9 a/r
SP Long Tube Race header (now standard on all SP turbo kits)
SP Quick Spool Valve
SP 4" Downpipe/midpipe
SP Boost Activated Exhaust Cutout
Top Secret Titanium exhaust
SP400 Stage 2 transmission
ProEFI 128 Standalone

Results:

The results were almost dead on with the rest of the testing that we have done whether on a 6spd or auto application. On this particular vehicle, we saw a gain of 150whp at 3300rpm simply by utilizing the SP QSV with absolutely no top end losses as previously speculated by many. The powerband is completely shifted from your usual Supra useless power band into a very street friendly and enjoyable band. The results are more than enough for me to get one of these on my car!!

Also for the record, the car made a staggering 547whp @ 17psi through the SP400 auto transmission on 93oct pump gas!!









For those still on the fringe, I will have a car on the dyno within a month or so that is a 6spd with a Precision Billet 6265 with our recently sourced 1.00 a/r divided housing. The results should be interesting to say the least. I imagine that it will have boost by just breathing on the gas pedal!!!

Enjoy!!

http://www.youtube.com/watch?v=I6ZCOTFET6s

Reid